Murder at Grammar Manor

Trick
Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.

Grammar Manor once again provided the perfect backdrop for the annual Punctuation Ball, hosted by Lord Charles of Colon and his dainty wife Sandra of Semicolon. Herbert Hash conducted the large brass band who were playing a slow song as the assembled punctuation marks danced serif in serif.

The evening, as it did in the years before, again was filled with a sense of glorious opulence and elegance which the punctuation marks would remember fondly. However, at the stroke of midnight this atmosphere was shattered as the many lights in the ballroom went out. Everything was submerged into darkness in an instant.

There was much commotion as the guests tried to work out what had happened. After a few moments, Quentin Question Mark found the switch and restored light to the room - and found Lord Charles in the middle of the dance floor, lying in a pool of blood. The distraught party guests called in the police to investigate, and the force sent their best man: Sergeant Arthur A. Ampersand.

Sergeant Ampersand surveyed the scene and spoke to the guests before drawing up a list of his top five murder suspects:

"I have followed all necessary leads to find out who murdered Lord Charles," said Sergeant Ampersand, "and I conclude that it's a mystery!" Before the guests could comment, Sergeant Ampersand checked his notes and arrested the culprit.

Who murdered Lord Charles?

Hint

Two tips here: firstly, check the category of this puzzle. Secondly, *listen* to what Sergeant Ampersand says.

Answer

Edward Ellipsis killed Lord Charles.

Sergeant Ampersand didn't say "it's a mystery", but rather, "it's a Mr. E". The only person in the list of suspects whose name begins with E is Edward Ellipsis.